Fig 9. Effects of GSH, BSO and HRW alone or their combinations on ascorbic acid pool (AsA and DHA) in the roots of Brassica campestris under Cd or none stress.

The germinated seeds were grown in nutrient solution for one day and then shifted to solutions with 0 or 50 μM CdCl₂ for another 12 h. After the removal of Cd stresses, the seedlings were then incubated in solution with 25 μM GSH, 10 μM BSO or 50% saturation of HRW alone or their combinations for 48 h. Data are means ± SE from three independent experiments. Bars with different letters are significantly different at P<0.05 according to Duncan’s multiple range test.